(1) When capacitors are found to have: shell expansion, oil leakage, sleeve rupture, abnormal internal sound, shell and joint heating, fuse failure, and dense pressure relief valve action. The power should be cut off immediately.
(2) After the capacitor switch trips, the power transmission circuit and the capacitor itself should be checked for faults. If it is caused by external reasons, it can be dealt with before trial operation. Otherwise, capacitors should be inspected and tested one by one. They cannot be put into operation until the cause is identified.
(3) When dealing with capacitor faults, the relevant switches and knife switches should be disconnected first. The capacitors should be fully discharged phase by phase before grounding. The neutral point of star connected capacitors should be grounded. Series capacitors and capacitors disconnected from the entire capacitor group should be discharged one by one. The capacitor shell installed on the insulation bracket should also be discharged.
